The lttng list command lists tracing sessions, tracing domains,
channels, and events.
Without arguments, lttng list lists the existing tracing sessions and
shows if they are active or not.
With one or more of the --kernel, --userspace, --jul, --log4j, and
--python domain options, the command lists the available event
sources of the selected domain on the system. The JUL, log4j, and
Python domains list the names of their available loggers. The
--syscall option can be used alongside the --kernel option to get a
list of traceable Linux system calls. The --fields option can be used
to show the fields of the listed event sources.
Providing a tracing session name SESSION targets a specific tracing
session. If the --domain option is used, domains containing at least
one channel in the selected tracing session are listed. Otherwise,
all the domains, channels, and event rules of the selected tracing
session are listed along with its details (trace path, for example),
except when the --channel option is used to isolate a specific
channel by name.

General options are described in lttng(1).
Domain-j, --jul
List event sources in the java.util.logging (JUL) domain.
-k, --kernel
List event sources in the Linux kernel domain.
-l, --log4j
List event sources in the Apache log4j domain.
-p, --python
List event sources in the Python domain.
-u, --userspace
List event sources in the user space domain.
Target-c CHANNEL, --channel=CHANNEL
Only list the details of the channel named CHANNEL.
Listing-d, --domain
Show the domains of the target tracing session in which at least
one channel exists.
-f, --fields
When listing the event sources with one of the domain options,
also show their fields.
--syscall
When listing the event sources of the Linux kernel domain, list
the traceable system calls instead of the kernel tracepoints.
Program information-h, --help
Show command help.
This option, like lttng-help(1), attempts to launch /usr/bin/man
to view the command’s man page. The path to the man pager can be
overridden by the LTTNG_MAN_BIN_PATH environment variable.
--list-options
List available command options.

LTTNG_ABORT_ON_ERROR
Set to 1 to abort the process after the first error is
encountered.
LTTNG_HOME
Overrides the $HOME environment variable. Useful when the user
running the commands has a non-writable home directory.
LTTNG_MAN_BIN_PATH
Absolute path to the man pager to use for viewing help
information about LTTng commands (using lttng-help(1) or lttngCOMMAND --help).
LTTNG_SESSION_CONFIG_XSD_PATH
Path in which the session.xsd session configuration XML schema
may be found.
LTTNG_SESSIOND_PATH
Full session daemon binary path.
The --sessiond-path option has precedence over this environment
variable.
Note that the lttng-create(1) command can spawn an LTTng session
daemon automatically if none is running. See lttng-sessiond(8) for
the environment variables influencing the execution of the session
daemon.

$LTTNG_HOME/.lttngrc
User LTTng runtime configuration.
This is where the per-user current tracing session is stored
between executions of lttng(1). The current tracing session can
be set with lttng-set-session(1). See lttng-create(1) for more
information about tracing sessions.
$LTTNG_HOME/lttng-traces
Default output directory of LTTng traces. This can be overridden
with the --output option of the lttng-create(1) command.
$LTTNG_HOME/.lttng
User LTTng runtime and configuration directory.
$LTTNG_HOME/.lttng/sessions
Default location of saved user tracing sessions (see
lttng-save(1) and lttng-load(1)).
/usr/local/etc/lttng/sessions
System-wide location of saved tracing sessions (see lttng-save(1)
and lttng-load(1)).
Note$LTTNG_HOME defaults to $HOME when not explicitly set.

Special thanks to Michel Dagenais and the DORSAL laboratory
<http://www.dorsal.polymtl.ca/> at École Polytechnique de Montréal
for the LTTng journey.
Also thanks to the Ericsson teams working on tracing which helped us
greatly with detailed bug reports and unusual test cases.

LTTng-tools was originally written by Mathieu Desnoyers, Julien
Desfossez, and David Goulet. More people have since contributed to
it.
LTTng-tools is currently maintained by Jérémie Galarneau
<mailto:jeremie.galarneau@efficios.com>.

This page is part of the LTTng-Tools ( LTTng tools) project.
Information about the project can be found at ⟨http://lttng.org/⟩.
It is not known how to report bugs for this man page; if you know,
please send a mail to man-pages@man7.org. This page was obtained
from the project's upstream Git repository
⟨git://git.lttng.org/lttng-tools.git⟩ on 2019-05-09. (At that time,
the date of the most recent commit that was found in the repository
was 2019-05-04.) If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-to-
date source for the page, or you have corrections or improvements to
the information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
LTTng 2.12.0-pre 10/29/2018 LTTNG-LIST(1)